Area above, there could be another erm whatever it is called. 'Vouches'. Basically Users can choose to 'vouch' for the person however there should be a certain requirement for users to vouch other people (Mods can decide the requirement) so as to prevent people making multi accounts to vouch themselves.

Hope you like my suggestion

This goes along the lines of Rep + Thanks + Post
All these things decide how trustworthy you are really.